package easy;

public class Solution_1929 {

    public int[] getConcatenation(int[] nums) {
        int[] array = new int[nums.length << 1];
        System.arraycopy(nums, 0, array, 0, nums.length);
        System.arraycopy(nums, 0, array, nums.length, nums.length);
        return array;
    }
}
